444450121 has 8 divisors (see below), whose sum is σ = 446433800. Its totient is φ = 442471680.

The previous prime is 444450077. The next prime is 444450157. The reversal of 444450121 is 121054444.

It can be written as a sum of positive squares in 4 ways, for example, as 44890000 + 399560121 = 6700^2 + 19989^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 444450121 - 2⁹ = 444449609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (444450161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 297745 + ... + 299233.

It is an arithmetic number, because the mean of its divisors is an integer number (55804225).

Almost surely, 2^444450121 is an apocalyptic number.

It is an amenable number.

444450121 is a deficient number, since it is larger than the sum of its proper divisors (1983679).

444450121 is a wasteful number, since it uses less digits than its factorization.

444450121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2619.

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 444450121 is about 21081.9856986955. The cubic root of 444450121 is about 763.1460773721.

The spelling of 444450121 in words is "four hundred forty-four million, four hundred fifty thousand, one hundred twenty-one".